The back of the library and the location of the Golden Bridles - The Underground Trials of Drake and Serpent - Impact of Genshin

For the quest Underground Trials of Drake and Serpent in Genshin Impact, players will need to explore Enkanomiya. Once you've found the library and Enjou, it's time to find the golden bridle.

The area players will need to explore is marked on the map, so head north of the library area, grabbing any key seals you come across along the way.

When you get to the area you need to investigate, you will find a large building with a chest inside. You have to go inside and explore that chest. There will be two walls with what appears to be ice / glass on the bottom. These can be moved using nearby mechanisms that you can hit with your weapon to move walls.

You can see the locations of each show on the map above, the screenshot below. You will need to hit the one on the right first, then go to the one on the left and hit it.

After hitting both mechanisms and moving the walls, you will have a clear passage to the chest, which contains the golden bridle. Once obtained, return it to Enjou in the library to continue the search.